Author: Frédéric Roux, Phd

Donostia San Sebastian, November 2020

Preprocessing

Sanity check

The distance between Big Ben in London (51.5007° N, 0.1246° W) and The Statue of Liberty in New York (40.6892° N, 74.0445° W) is 5574.8 km.

returns

latitude longitude \ 0 51.5007 0.1246 \ 1 40.6892 74.0445 \ 5574.840456848555

Exploratory analysis

Predictive analysis: Predict user identity

[ ? ] Model has high bias, ie it does not generalize well to new cases (overfitting): Redo analysis with different train-test split, ie 60-40 instead of 80-20. This should improve generability.

[ ? ] Remove samples whith low accuracy to improve signal

pca, multdim scaling -> welches space halten die sich auf, feature: velocity,mean distance zwischen den punkten

Possible features: \

l2 norm als distanzmass: lstm model regression, gradient boosting

wie gross ist laengste sequenz

welcher user ist das?